The authors have verbatim called the result horrifying too. I fully agree it's a horrifying result; but people disregarding a result just because it's scary is how we ended up in this climate change mess, how people were manipulated in to believing vaccines cause autism related conditions and I'm sure I could come up with lots of other examples. I'm going to give people shit if they disregard what is currently a valid scientific result based on feelings whether they like it or not.
A result being terrifying doesn't make it untrue, and nobody has made a reasoned argument for it not being (and nobody will in this thread, because it would likely be weeks of dedicated work at minimum). The closest we've gotten is a one line comment from a research lab in glasgow, which isn't even close to enough to form a opinion counter to the paper on, but I'm sure they will be paying very close attention to the results.
Obviously this does prove that the AI is capable of learning based on a very particular subset of specific self-identified cis individuals of a specific race in a self-selected sample (by using the site in the first place) within a specific context and using that to identify visual markers. Using that to apply more broadly to the idea of the "gay" community or gay identity is over-simplification at best, and feeds into already prominent stereotypes and assumptions about queer identity at worst. Perhaps this is mostly an over-simplification in the reporting and the study itself is more nuanced in its understanding of the community at the center of its research, but the limited sample and the implied priorities that suggests make that seem somewhat unlikely.
But the argument that this research is in some way inherently beneficial to the LGBTQ community as a whole by clearly identifying and elaborating on a potential danger is honestly ridiculous and seems founded on some underlying assumption that gay people aren't already acutely aware of the dangers we face by existing. We did not need scientists to identify this terrifying reality for us and the implication that we might lack self-awareness does not make this research or its intentions inherently more noble as a result.